sludge thickener xls

Engineering Excel Templates Downloads

This Excel spreadsheet carries out an iterative solids mass balance for an activated sludge wastewater treatment system in order to determine the recycle flow rate, BOD, and TSS from a sludge thickener, anaerobic digester, and dewatering system.

Measuring Settling Rates and Calculating Thickener Capacity

The required depth of the thickener may be ascertained by computing the capacity of the thickening zone to contain a supply of solids equal to the total capacity of the tank for the number of hours required to thicken the pulp to the density required in the discharge, and to this depth adding an allowance for the lost space due to the pitch of

Clarifier Sizing Spreadsheet HydroFloTech

The spreadsheet operates on Microsoft Excel 2003 or later. Below is a sample shot of the spreadsheet. NOTE The hydraulic loading ratio is typically set from .25 to .5 The lower the settling rate or specific gravity (of the settleable material) the lower the hydraulic loading ratio.

SUMMARY OF KEY WASTEWATER MATH FORMULAS

Sludge Age, Days = ( Aeration Tank TSS, lbs ) (Refer to MCRT ) ( Primary Clarifer Effluent TSS, lbs/day ) 7. Return Sludge = ( Aerator Flow, MGD ) x ( Settable Solids, % ) Rat e, MGD 8. Desired MLSS, = ( Desired MLSS in Aerator, lbs. ) mg/l ( Aerator Vol., MG ) x ( 8.34 lbs/gal )

A Critical Review of Thickener Design Methods t

A Critical Review of Thickener Design Methods t F. Concha and A. Barrientos Department of Metallurgical Engineering University of Concepcion* Abstract In this work we analyze, in the light of their physical foundation, the different methods of thickener design that have been proposed in the literature.

Sludge Thickening an overview ScienceDirect Topics

Sludge Thickening. Sludge thickening is a process in which the solids concentration is increased and the total sludge volume is correspondingly decreased, but the sludge still behaves like a liquid instead of a solid. Thickening commonly produces sludge solids concentrations in the 3% to 5% range, whereas the point at which sludge begins to

A ATIONAL SUSTAINABLE MUNICIPAL INFRASTRUCTURE

unit process within their WWTP and to conduct a sludge accountability analysis. An overall best practice entitled . Wastewater Treatment Plant Optimization. has been published by the . National Guide to Sustainable Municipal Infrastructure Innovation and Best Practices. Effective solids inventory control in a WWTP can (

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Typical amount of BOD removed to sludge during wastewater treatment Sawdust density, solids and nitrogen data from OnFarm Composting Handbook 1992 average values, TVS from Bill Seekins data (ME Dept. Ag) Thickening electricity use gravity, gravity belt and drum (kWh/Mgsludge dry) Thickening electricity use centrifuge (kWh/Mgsludge dry)

Sludge Thickening Sewage Treatment Reverse Osmosis

Wastewater treatment plants commonly use thickening devices to increase the solids concentration at the end of a particular process step within the activated sludge process. Thickening of sludge increases its solids content and reduces the volume of free water thereby minimizing the unit load on downstream processes such as digestion and

What is the Sludge Thickening Process in Water Treatment

Mar 06, 20180183;32;Sludge thickening is important because it is the process used in wastewater treatment centers to increase the solids concentration and decrease the free water. This step minimizes the load on the downstream processes, such as sludge dewatering and digestion.

SLUDGE DEWATERING

It is also very easy to concentrate this type of sludge with a static thickening step just before dewatering. The drawback is that this sludge ferments very easily. 1.2.2. Biological sludge Biological sludge comes from the biological treatmentof the wastewater. It is made of a mixture of microorganisms.

Activated Sludge Waste Water Treatment Calculations with

Activated sludge waste water treatment calculations are made easy in U.S. or S.I. units with the Excel spreadsheets that can be downloaded through links in this article. The Excel formulas use parameters like biochemical oxygen demand (BOD), waste water flow rates, and total suspended solids concentrations to make activated sludge aeration tank design and operation calculations. There are

Introduction to Sludge Handling, Treatment and Disposal

SLUDGE THICKENING. Thickening is provided to reduce the volume of sludge. Two basic types of thickeners work by gravity or flotation and use either continuous or batch processes. Gravity thickeners are essentially settling tanks with or without mechanical thickening devices (picket fence type). Plain settling tanks can produce

activated sludge Archives Engineering Excel Spreadsheets

Low Cost Easy to Use Spreadsheets for Engineering Calculations Available at Engineering Excel Spreadsheets At Engineering Excel Spreadsheets, we have low cost, easy to use spreadsheets for engineering calculations, including pipe flow, flow measurement, stormwater measurement, heat transfer coefficients, open channel flow, structural analysis of beams, and more.

Sludge Thickening Sewage Treatment Reverse Osmosis

Wastewater treatment plants commonly use thickening devices to increase the solids concentration at the end of a particular process step within the activated sludge process. Thickening of sludge increases its solids content and reduces the volume of free water thereby minimizing the unit load on downstream processes such as digestion and

Lesson B5 SEWAGE SLUDGE TREATMENT TUHH

EMWATER ELEARNING COURSE PROJECT FUNDED BY THE EUROPEAN UNION LESSON B5 SEWAGE SLUDGE TREATMENT Page 3 of 23 Overview and summary of this Lesson Sludge originates from the process of treatment of wastewater and is separated from the treatment process by sedimentation or flotation.

Centrifuge Thickening and Dewatering Biosolids US EPA

Centrifuge Thickening and Dewatering. Related Information. Information for Biosolids Managers. Centrifugal thickening and dewatering of sewage sludge is a high speed process that uses the force from rapid rotation of a cylindrical bowl to separate wastewater solids from liquid. Centrifuges have been used in wastewater treatment since the 1930s.

Sludge Thickening and Dewatering Sludge Treatment System

Sludge thickening and dewatering is two important stages in treating sludge. Thickening is the first step of sludge treatment in which the solids concentration is increased and the total sludge volume is correspondingly decreased, Thickening commonly produces sludge solids concentrations between 15% and 20%, LZZG Deep Cone Thickener results in maximum water recovery, maximum underflow

Sludge Treatment and Disposal SSWM

5 Sludge thickening and dewatering 76 R.F. Goncalves,184; M. Luduvice, M. von Sperling 5.1 Thickening and dewatering of primary and biological sludges 76 5.2 Sludge thickening 78 5.3 Sludge conditioning 81 5.4 Overview on the performance of the dewatering processes 90 5.5 Sludge drying beds 92 5.6 Centrifuges 99 5.7 Filter press 107 5.8 Belt

CHAPTER 12 Sludge Processing and Disposal

The costeffectiveness of sludge thickening should be considered prior to treatment and/or disposal. 12.3.1.1 Capacity Thickener design should provide adequate capacity to meet peak demands. 12.3.1.2 Septicity Thickener design should provide means to prevent septicity during the thickening process.

Introduction to Sludge Handling, Treatment and Disposal

SLUDGE THICKENING. Thickening is provided to reduce the volume of sludge. Two basic types of thickeners work by gravity or flotation and use either continuous or batch processes. Gravity thickeners are essentially settling tanks with or without mechanical thickening devices (picket fence type). Plain settling tanks can produce

Thickening for Municipal Water Treatment

Thickening. Gravity sludge thickeners are an easy and costeffective approach to minimizing the volume of waste solids. Our experts size thickeners to achieve the highest concentration of sludge with the smallest footprint. Related Products. CONTRAFAST174; HighRate Thickener Clarifier.

Beginners Guide to Thickeners Outotec

Beginners Guide to Thickeners Thickening is a process where a slurry or solidliquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water (or liquor in leaching processes).

Aquaflow XLS525 nonionic synthetic associative thickener

Aquaflow XLS525 rheology modifier is a solventfree nonionic synthetic associative thickener (NSAT) designed for waterborne paints and coatings. It is effective with most latex systems. Aquaflow XLS525 NSAT provides an exceptional balance of leveling and sag resistance when used in combination with a highshear effective NSAT (ICI driver).

CTB3365x Introduction to Water Treatment

CTB3365x Introduction to Water Treatment W6a Thickening Jules van Lier stabilized excess sludge is being processed in conventional D uring the biological treatment of domestic sewage, excess sludge is being produced that originates from either, the

Steadystate, control, and capacity calculations for

of the socalled Ideal Continuous Thickener (ICT) (Shannon and Tory, 1966) is reviewed. This model corresponds to the depth interval [0, x R] (the thickening zone of the CT setup) and is continuously fed at depth x=0 with feed suspension. This unit comprises only the thickening zone; the clarification and overflow zones are not explicitly modelled.

Activated Sludge Waste Water Treatment Calculations with

Activated sludge waste water treatment calculations are made easy in U.S. or S.I. units with the Excel spreadsheets that can be downloaded through links in this article. The Excel formulas use parameters like biochemical oxygen demand (BOD), waste water flow rates, and total suspended solids concentrations to make activated sludge aeration tank design and operation calculations. There are

Beginners Guide to Thickeners Outotec

Beginners Guide to Thickeners; Beginners Guide to Thickeners. Thickening is a process where a slurry or solidliquid mixture is separated to a dense slurry containing most of the solids and an overflow of essentially clear water (or liquor in leaching processes). The driving force for the separation is gravitational, where the differences in

Introduction to Sludge Handling, Treatment and Disposal

SLUDGE THICKENING. Thickening is provided to reduce the volume of sludge. Two basic types of thickeners work by gravity or flotation and use either continuous or batch processes. Gravity thickeners are essentially settling tanks with or without mechanical thickening devices (picket fence type). Plain settling tanks can produce

Chapter 5 Sludge treatment site.iugaza.edu.ps

Sludge conditioning is a pretreatment step to increase the efficiency of sludge thickening and dewatering of sludge. The two most common methods of sludge conditioning are a) Chemical conditioning Addition of lime Ca (OH)2. Addition of ferric chloride Fe cl3 Addition of alum AL2 (SO4)3. Addition of organic polymers.