A process for treating waste water from slate production

A technology for the production of waste water and treatment process, which is applied in the direction of special compound water treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems that are difficult to meet the needs of pollution control, and achieve convenient daily maintenance, Good effluent quality and large treatment capacity

Active Publication Date: 2016-05-04
FUJIAN LINGZHI DEMEI ENVIRONMENTAL PROTECTION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The initial rainfall of moderate rainstorms in the territory can reach 2800m 3 / km 2 h, the base flow of Lanshui Creek, Huayuan Creek, Qibu Creek, etc. reaches an average of more than 20,000 cubic meters per day, and the general non-point source pollution control technology is difficult to meet the pollution control needs

Method used

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  • A process for treating waste water from slate production

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Dilute the waste water from the production of stone slabs to be treated by 20m 3 The speed of / min is added in the coagulation reactor 1, and in the coagulation reactor 1, a magnetic seed (Fe with an organic film with active groups grown on the surface) 3 o 4 , the particle size is 2-10μm, and the amount added is 150g / m according to the amount of waste water from stone plate production to be treated 3 ), stirring at a speed of 450r / min for 1min, then reducing the speed to 70r / min, and adding the coagulation aid PAM (the average molecular weight is 15 million to 20 million, and the concentration is 2 ‰, the amount added is 0.75g / m3 based on the amount of waste water from stone slab production to be treated 3 ), add coagulant PAC (aluminum chloride content is 8wt% by PAC dosing device 9 in coagulation reactor 1, and the amount of addition is calculated as 3g / m by the amount of stone plate material production wastewater to be treated 3 ), stirring for 1min to carry o...

Embodiment 2

[0039] 1. Dilute the waste water from the production of stone slabs to be treated by 30m 3 The speed of / min is added in the coagulation reactor 1, and in the coagulation reactor 1, a magnetic seed (Fe with an organic film with active groups grown on the surface) 3 o 4 , the particle size is 2-10μm, and the amount added is 200g / m3 based on the amount of waste water from stone plate production to be treated 3 ), stirred at a speed of 500r / min for 2min, then reduced the speed to 250r / min, and added the coagulant PAM (the average molecular weight is 15 million to 20 million, and the concentration is 2 ‰, the amount added is 0.90g / m3 based on the amount of waste water from stone slab production to be treated 3 ), add coagulant PAC (aluminum chloride content is 15wt%) in coagulation reactor 1 by PAC dosing device 9, and the amount of addition is calculated as 6g / m by the amount of stone plate production wastewater to be treated 3 ), stirring for 2min to carry out coagulation rea...

Embodiment 3

[0043] 1. Dilute the waste water from the production of stone slabs to be treated by 25m 3The speed of / min is added in the coagulation reactor 1, and in the coagulation reactor 1, a magnetic seed (Fe with an organic film with active groups grown on the surface) 3 o 4 , the particle size is 2-10μm, and the amount added is 180g / m3 based on the amount of waste water from stone plate production to be treated 3 ), stirring at a speed of 480r / min for 1.5min, then reducing the speed to 100r / min, and adding coagulant PAM (average molecular weight is 15 million to 20 million, concentration is 2‰, the amount added is 0.80g / m3 based on the amount of waste water from stone slab production to be treated 3 ), add coagulant PAC (aluminum chloride content is 10wt%) in coagulation reactor 1 by PAC dosing device 9, and the amount of addition is calculated as 5g / m by the amount of stone plate material production wastewater to be treated 3 ), stirred for 1.5min to carry out coagulation reacti...

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Abstract

The invention relates to a stone-slab production wastewater treatment process. The stone-slab production wastewater treatment process includes adding to-be-treated stone-slab production wastewater into a coagulation reactor, and feeding magnetic seeds, coagulant aids and coagulants into the coagulation reactor to perform coagulation reaction; guiding mixed liquid obtained after coagulation reaction into a super-magnetic separator to perform super-magnetic separation, directly discharging or reusing water obtained from separation, subjecting micro-magnetic floccules obtained from separation to separation of the magnetic seeds and non-magnetic sludges by a magnetic recovery system, returning the magnetic seeds to the coagulation reactor for coagulation reaction, and enabling the sludges to enter a sludge treatment system for treatment. The stone-slab production wastewater treatment process has the advantages that the stone-slab production wastewater is treated by a super-magnetic separation water purification technology, and the treatment process is further optimized and adjusted, so that the point source and non-point source pollution control requirements of the stone slab industry are met.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a waste water treatment process for stone slab production. Background technique [0002] Current status of pollution control in the stone processing industry in Luoyuan County: water and soil erosion from stone mining, sewage from primary stone cutting, waste dumping, sewage from waste dumps, dust on the ground in industrial areas, and accidental discharges from sewage treatment facilities of individual enterprises have seriously polluted the streams in the river basin. Especially in rainy days, the surface runoff formed by the initial rainwater caused serious pollution of the stream, forming the "milk stream". After monitoring, the turbidity of the stream water can reach about 500NTU, especially affected by the initial rainwater, the turbidity of the water can reach up to 2500NTU (the provincial and municipal governments require the turbidity of the stream water to be l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56
CPCB03C1/02C02F1/52C02F1/54C02F1/56C02F11/123C02F2301/00C02F2305/00
Inventor 陈钟敏陈群
Owner FUJIAN LINGZHI DEMEI ENVIRONMENTAL PROTECTION ENG CO LTD
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