REPORT ON COMMON EFFLUENT TREATMENT PLANT PANDESARA, SURAT.

GUIEDED BY: Lect. Niren Pathak

PREPARED BY: Kishan N.Vadariya Neha N. Maheshwari Priti P. Kothari Virendra S. Yadav

SARVAJANIK COLLEGE OF ENGINEERING & TECHNOLOGY CHEMICAL ENGINEERING DEPT. SURAT.

ACKNOWLEDGEMENTIt invokes in us a great sense of gratitude for each and every person who has landed us their kind co-operation without which the report would be a mission without aim. We express our gratefulness to Mr. Hardik Desai (Chemical Engineer) & Mr. Niren Pathak (Chemical Engineer) who has given such a chance to prove our efforts and whose able guidance and co-operation has led towards the fulfillment of our efforts into this report. We are deeply indebted to Mr. Paresh Mevawala (Director) ENPRO Enviro Tech and Engineers Pvt. Ltd. & Mr. Praful D. Panchal (Plant Manager) for granting us the permission for the project at COMMON EFFLUENT TREATMENT PLANT as well as for the necessary support and facilities extended to us at each & every step of the preparation of this project.

Kishan N. Vadariya Neha N.Maheshwari Priti P.Kothari Virendra S. Yadav

ABSTRACT

This report is for the study about COMMON EFFLUENT TREATMENT PLANT (CETP). CETP is one type of waste water treatment plant. This report includes classification, operation and other parameters. Mainly three sections are there in this report. 1. 2. 3. Physico-chemical treatment Biological treatment Sludge handling system

This plant uses Australian technology -Cyclic Activated Sludge Process which is one type of Sequential Batch Reactor (SBR) having capacity of 100 MLD. In future the expansion is of 50 MLD, which will lead this plant to be one of the largest Waste Water Effluent Treatment Plant in India (Capacity: 150 MLD).

. CONTENTS . Introduction of Company

Plant Description Equalization tank Chemical Dosing Sludge Blanket Clarifier Dewatering system pH Correction tank C-Tech Tank Laboratory Analysis Sludge Handling System Final Effluent Discharge

COMPANYS PROFILE NAME: COMMON EFFLUENT TREATMENT PLANT PANDESARA GREEN ENVIROMENT WATER WELFARE CO-OPERATIVE SOCIETY LTD.

ADDRESS: (PLANT) (OFFICE) EMAIL: YEAR OF ESTABLISHMENT: TYPE OF COMPANY: PRODUCTS: FACTORS AFFECTING PLANT LOCATION: PLANT LAYOUT: NUMBER OF SHIFTS AND TIMINGS:

PLOT NO-46/P, VILLAGE VADOD, NEAR DUNDI GAM, SACHIN MAGDALLA HIGHWAY, SURAT. PLOT NO-195,2ND FLOOR, OPPOSITE WINTEX MILLS, GIDC, PANDESARA, SURAT-394221 pandesaragreensociety@gmail.com 28th June, 2007 SMALL SCALE Small Plant as it is under commissioning. As it is ETP plant hence no product is there but press mud is obtained as by-product & treated water is send to sea through pipe-lines.

ATTACHED Three shifts Timing: first shift 7am to 3pm Second shift 3pm to 11pm Third shift 11pm to 7am

PLANT DESCRIPTION: Common Effluent Treatment Plant (CETP): Collective effort mainly for a cluster of small scale industrial units. This concept is similar to the concept of Municipal Corporation treating sewage of all the individual houses. The main objective of CETP is to reduce the treatment cost for individual units while protecting the environment.

To achieve Economics of scale in waste treatment, thereby reducing the cost of pollution abatement for individual factory. To minimize the problem of lack of technical assistance and trained personnel as fewer plants require fewer people. To solve the problem of lack of space as the centralized facility can be planned in advance to ensure that adequate space is available. To reduce the problems of monitoring for the pollution control boards. To organize the disposal of treated wastes and sludge and to improve the recycling and reuse possibilities.

Basically CETP has two stage of separation whereby the initial stage is mainly to focus on removing solid waste particles by means of mechanical separation. Usually it has an equalization tank whereby all the effluent (waste water) is first diverted here in order to separate out mainly oil & grease which does not mix with water. The principle behind this separation technique is based on chemical properties whereby both oil & grease does not mix and both have different densities whereby oil is lighter and floats to the top and thus can be skimmed out by mechanical separator. This step on removing oil & grease is very important because if this were not properly carried out , the next step on chemical treatment would not work. Secondary treatment usually involves use of micro-organisms to further breakdown the organic matter to smaller nontoxic compounds. All this takes place in an aeration tank whereby oxygen is introduced vigorously into the water and at same time providing nutrient such as urea and phosphate to supplement growth of the bacteria. During this stage, there is significant reduction in the COD level. The byproduct generated from this stage which are sludge are then diverted to a drying bed or by other means of further draining out the water such as the use of a filter press. Components of incoming Effluents: As said earlier waste water has many components that are present in large quantities. A few of them can endanger human health. They are Solids Gases Organisms Organic matter Inorganic matter Oil and grease

DESIGN BASIS Plant Capacity Peak Factor Inlet Parameters Sr. No Parameters Units Inlets : : 100MLD 1.0

1 2 3 4 5 6 7 8

Ph BOD COD TSS OIL & GREASE TKN COLOUR TEMPERATURE

Ppm Ppm Ppm Ppm Ppm Pt. Co C

6.5 8.5 450 1100 300 15 1.85 400 30

Outlet Parameters Sr. No 1 2 3 4 5 6 Parameters pH BOD COD TSS OIL & GREASE COLOUR Units Ppm Ppm Ppm Ppm Pt. Co Inlets 5.5 9