CN103319052B - System and method for treating cowboy yarn pulp dyeing wastewater - Google Patents
System and method for treating cowboy yarn pulp dyeing wastewater Download PDFInfo
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- CN103319052B CN103319052B CN201310284666.XA CN201310284666A CN103319052B CN 103319052 B CN103319052 B CN 103319052B CN 201310284666 A CN201310284666 A CN 201310284666A CN 103319052 B CN103319052 B CN 103319052B
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Abstract
The invention relates to a system for treating cowboy yarn pulp dyeing wastewater. The system comprises a raw water pool (1), a microbial flocculation and sedimentation tank (2), an activated sludge tank (3), an internal sedimentation tank (4), a coagulation and sedimentation tank (5), a sludge draining pool (6), a polyaluminum chloride tank (7) and a water draining pool (8). A method for treating the cowboy yarn pulp dyeing wastewater comprises the steps of: (a) treating by using the microbial flocculation and sedimentation tank; (b) treating by using the activated sludge tank; (c) treating by using the internal sedimentation tank; and (d) treating by using the coagulation and sedimentation tank. The system and the method have the advantages of high treating efficiency, low operating cost and little sludge generation.
Description
Technical field
The invention relates to a kind for the treatment of system and method thereof of cowboy's yarn pulp waste water.
Background technology
Jeans are liked by people all over the world, and lasting, and jean occupies larger ratio in textiles.Its Production Flow Chart is yarn pulp, weave, rear arrangement, fabric finished product.In yarn pulp operation, use multiple dyestuff and chemical assistant, comprise bipseudoindoxyl dye, thioxine dyes, sodium sulphite, vat powder, modified starch, acrylic size etc.Because the dye uptake of dyestuff is low, a large amount of dye well chemical assistants becomes the major ingredient of waste water after pulp washing.The feature of cowboy's yarn pulp waste water is: basicity is high, colourity is dark, saltiness is high, COD is high, large to environmental influence.
The treatment process of waste water (also claiming former water in the present invention), mainly take materialization-biochemistry method as main, technical process is as Fig. 2, and its weak point is:
1, system sludge (water ratio 80%) generation is many: 2.6-3.9 ton/100 ton. waste water.
2, system operation cost is high: water treatment expense 3.2-3.7 yuan/ton. waste water, sludge disposal expense 4.2-7.8 yuan/ton. and waste water, adds up to 7.4-11.5 yuan/ton. waste water.
3, discharge water saltiness is many: 4.2-4.8g/L.
4,, owing to adding in a large number ferrous sulfate, discharge water is high containing iron ion, saltiness is high, is unfavorable for follow-up middle water reuse.
Summary of the invention
The technical problem to be solved in the present invention is treatment system and the method thereof of cowboy's yarn pulp waste water of the biochemical-physical combination treatment that a kind of processing efficiency of exploitation is high, running cost is low, sludge creation amount is few.
This technological line adopts: biochemical-physical combination treatment (being the processing of this cowboy yarn pulp waste water) technical process, and as Fig. 1.Biochemical-physical combination treatment (being the processing of this cowboy yarn pulp waste water) system and device, as Fig. 3.
Technical solution of the present invention is:
The treatment system of cowboy's yarn pulp waste water, it is characterized in that, comprise former pond, microorganism flocculation sedimentation tank, activated sludge tank, interior settling tank, coagulative precipitation tank, spoil disposal pond, polymerize aluminum chloride pond, discharge pond, contacting successively in former pond, microorganism flocculation sedimentation tank, activated sludge tank, interior settling tank, coagulative precipitation tank, discharge pond, connects by pipeline; Microorganism flocculation sedimentation tank below is connected with spoil disposal pond by pipeline, and coagulative precipitation tank top is connected with polymerize aluminum chloride pond by pipeline; Interior settling tank is connected with microorganism flocculation sedimentation tank, activated sludge tank by other pipeline simultaneously again; Coagulative precipitation tank passes through a pipeline again and is connected with microorganism flocculation sedimentation tank.
The treatment system of another cowboy's yarn pulp waste water, it is characterized in that, comprise former pond, microorganism flocculation sedimentation tank, activated sludge tank, interior settling tank, coagulative precipitation tank, spoil disposal pond, polymerize aluminum chloride pond, discharge pond, contacting from high to low according to physical features successively in former pond, microorganism flocculation sedimentation tank, activated sludge tank, interior settling tank, coagulative precipitation tank, discharge pond, connects by pipeline; Microorganism flocculation sedimentation tank below is connected with spoil disposal pond by pipeline, and coagulative precipitation tank top is connected with polymerize aluminum chloride pond by pipeline; Interior settling tank is connected with microorganism flocculation sedimentation tank, activated sludge tank by other pipeline simultaneously again, on pipeline, pump is housed in addition; Coagulative precipitation tank 5 passes through a pipeline again and is connected with microorganism flocculation sedimentation tank, then on a pipeline, pump is housed; On pipeline between former pond, microorganism flocculation sedimentation tank, pump is housed.
The treatment process of cowboy's yarn pulp waste water, is characterized in that, comprises the following steps:
A, the processing of microorganism flocculation sedimentation tank: raw water pump is biofloculation settling tank in a subtle way, whole materialized muds that in part, settling tank active sludge and coagulative precipitation tank produce are back to microorganism flocculation sedimentation tank, mix with former water; Control flocculation reaction time 1-1.5 hour, pneumatic blending; Then through precipitation, solid-liquid separation, upper strata clear water is from flowing into activated sludge tank, and the mud in microorganism flocculation sedimentation tank discharges in time;
B, activated sludge tank processing: the upper strata clear water gravity flow of microorganism flocculation sedimentation tank enters activated sludge tank, the active sludge coming with interior settling tank backflow mixes, Air Exposure: according to the variation of the water yield, water quality, controlling parameter is that mud compares SV
3040-60%, residence time HRT35-40hr, dissolved oxygen DO6-9.5mg/L, activated sludge tank end redox potential ORP>=110mv; Mixed solution gravity flow after treatment enters interior settling tank;
C, interior settling tank processing: from activated sludge tank mixed solution after treatment, in interior precipitation process precipitate and separate; Supernatant water is from flowing into coagulative precipitation tank; The active sludge 8-15% of lower floor is back to activated sludge tank, and rest part is back to microorganism flocculation sedimentation tank;
D, coagulative precipitation tank processing: from the supernatant water of interior precipitation, in coagulative precipitation tank, by adding the polymerize aluminum chloride of 100-200mg/L, form mud alumen ustum; Again through precipitate and separate; Upper water is discharge water, and lower floor's mud is materialized mud, is all back to microorganism flocculation sedimentation tank.
Processing efficiency of the present invention is high, running cost is low, sludge creation amount is few.
This technological merit:
1. reduce dosing, reduce Material Cost;
2. 1.1～1.5 tons/100 tons of the total sludge outputs of system (water ratio 80%). waste water;
3. system operation cost: water treatment expense 3.0-3.5 yuan/ton. waste water, sludge treatment expense 1.7-3.0 yuan/ton. waste water, adds up to running cost: 4.7-6.5 yuan/ton. waste water.
4. the total salt of system declines, and discharge water saltiness is less than 3.0-3.5g/L, is conducive to follow-up middle water reuse and the processing of desalting;
5. the total salt of system maintains suitable level, is conducive to microorganism growth and metabolism, is conducive to improve activated sludge tank processing efficiency;
Traditional materialization-biochemistry technique of comparing, all has and has obvious effect in running cost, sludge creation amount, discharge water salt and COD processing rate several respects.
accompanying drawing explanation:
Fig. 1 is the processing technological flow figure of this cowboy yarn pulp waste water,
Fig. 2 is that traditional materialization-biochemistry method is main process flow sheet,
Fig. 3 is the treatment system setting drawing of this cowboy yarn pulp waste water.
embodiment:
Embodiment:
The treatment system of cowboy's yarn pulp waste water, it is characterized in that, comprise former pond 1, microorganism flocculation sedimentation tank 2, activated sludge tank 3, interior settling tank 4, coagulative precipitation tank 5, spoil disposal pond 6, polymerize aluminum chloride pond 7, discharge pond 8, contacting successively in former pond 1, microorganism flocculation sedimentation tank 2, activated sludge tank 3, interior settling tank 4, coagulative precipitation tank 5, discharge pond 8, connects by pipeline; Microorganism flocculation sedimentation tank 2 belows are connected with spoil disposal pond 6 by pipeline, and coagulative precipitation tank 5 tops are connected with polymerize aluminum chloride pond 7 by pipeline; Interior settling tank 4 is connected with microorganism flocculation sedimentation tank 2, activated sludge tank 3 by other pipeline simultaneously again; Coagulative precipitation tank 5 passes through a pipeline again and is connected with microorganism flocculation sedimentation tank 2.
The treatment system of another cowboy's yarn pulp waste water, it is characterized in that, comprise former pond 1, microorganism flocculation sedimentation tank 2, activated sludge tank 3, interior settling tank 4, coagulative precipitation tank 5, spoil disposal pond 6, polymerize aluminum chloride pond 7, discharge pond 8, contacting from high to low according to physical features successively in former pond 1, microorganism flocculation sedimentation tank 2, activated sludge tank 3, interior settling tank 4, coagulative precipitation tank 5, discharge pond 8, connects by pipeline; Microorganism flocculation sedimentation tank 2 belows are connected with spoil disposal pond 6 by pipeline, and coagulative precipitation tank 5 tops are connected with polymerize aluminum chloride pond 7 by pipeline; Interior settling tank 4 is connected with microorganism flocculation sedimentation tank 2, activated sludge tank 3 by other pipeline simultaneously again, on pipeline, pump is housed in addition; Coagulative precipitation tank 5 passes through a pipeline again and is connected with microorganism flocculation sedimentation tank 2, then on a pipeline, pump is housed; On pipeline between former pond 1, microorganism flocculation sedimentation tank 2, pump is housed.
The treatment process of cowboy's yarn pulp waste water, is characterized in that, comprises the following steps:
A, the processing of microorganism flocculation sedimentation tank: raw water pump is biofloculation settling tank in a subtle way, whole materialized muds that in part, settling tank active sludge and coagulative precipitation tank produce are back to microorganism flocculation sedimentation tank, mix with former water; Control flocculation reaction time 1-1.5 hour, pneumatic blending; Then through precipitation, solid-liquid separation, upper strata clear water is from flowing into activated sludge tank, and the mud in microorganism flocculation sedimentation tank discharges in time;
B, activated sludge tank processing: the upper strata clear water gravity flow of microorganism flocculation sedimentation tank enters activated sludge tank, the active sludge coming with interior settling tank backflow mixes, Air Exposure: according to the variation of the water yield, water quality, controlling parameter is that mud compares SV
3040-60%, residence time HRT35-40hr, dissolved oxygen DO6-9.5mg/L, activated sludge tank end redox potential ORP>=110mv; Mixed solution gravity flow after treatment enters interior settling tank;
C, interior settling tank processing: from activated sludge tank mixed solution after treatment, in interior precipitation process precipitate and separate; Supernatant water is from flowing into coagulative precipitation tank; The active sludge 8-15% of lower floor is back to activated sludge tank, and rest part is back to microorganism flocculation sedimentation tank;
D, coagulative precipitation tank processing: from the supernatant water of interior precipitation, in coagulative precipitation tank, by adding the polymerize aluminum chloride of 100-200mg/L, form mud alumen ustum (floss); Again through precipitate and separate; Upper water is discharge water, and lower floor's mud is materialized mud, is all back to microorganism flocculation sedimentation tank.
Former water after microorganism flocculation sedimentation tank is processed, most of dyestuff, fiber impurity, part macromole colloidal state organism is removed, pH value is more steady.
The processing of microorganism flocculation sedimentation tank is the core of this technology.Be different from ferrous sulfate coagulating sedimentation, this technology is passed through the oxygenizement of the high ORP value active sludge of backflow, the electricity of backflow materialized mud and effect.Abolish the stability of reduction-state dyestuff, thereby realize the effect of microorganism flocculation sediment.
This technology is applied in Practical Project, has obtained good effect.
The present invention makes the total processing rate of system: COD >=98%, sulfide >=99% reach " textile dyeing and finishing industrial water pollution thing emission standard " (GB4287-2012) primary standard comprehensively.The total salt of system obviously declines, and the total salt of discharge water is less than 3-3.5g/L, and decline 20-27%, for good condition has been created in follow-up middle water reuse.Sludge creation amount is few, and the total sludge output of system (water ratio 80%) is less than 1.5 tons/100 tons waste water, and 50% left and right declines.System total operating cost 40% left and right that declines.
explain: 1. pneumatic blending refers to that pressurized air is discharged in water by perforation tracheae, forms bubble, stirs the process of water.
2. aeration refers to that pressurized air is discharged in water by microporous pipe, forms intensive bubble, stirs the process of water and increase oxygen in water.
Claims (1)
1. a treatment process for cowboy's yarn pulp waste water, is characterized in that, comprises the following steps:
A, the processing of microorganism flocculation sedimentation tank: raw water pump is biofloculation settling tank in a subtle way, whole materialized muds that in part, settling tank active sludge and coagulative precipitation tank produce are back to microorganism flocculation sedimentation tank, mix with former water; Control flocculation reaction time 1-1.5 hour, pneumatic blending; Then through precipitation, solid-liquid separation, upper strata clear water is from flowing into activated sludge tank, and the mud in microorganism flocculation sedimentation tank discharges in time;
B, activated sludge tank processing: the upper strata clear water gravity flow of microorganism flocculation sedimentation tank enters activated sludge tank, the active sludge coming with interior settling tank backflow mixes, Air Exposure: according to the variation of the water yield, water quality, controlling parameter is active sludge settling ratio 40-60%, residence time 35-40hr, dissolved oxygen 6-9.5mg/L, activated sludge tank end redox potential >=110mv; Mixed solution gravity flow after treatment enters interior settling tank;
C, interior settling tank processing: from activated sludge tank mixed solution after treatment, in interior settling tank process precipitate and separate; Supernatant water is from flowing into coagulative precipitation tank; The active sludge 8-15% of lower floor is back to activated sludge tank, and rest part is back to microorganism flocculation sedimentation tank;
D, coagulative precipitation tank processing: from the supernatant water of interior settling tank, in coagulative precipitation tank, by adding the polymerize aluminum chloride of 100-200mg/L, form mud alumen ustum; Again through precipitate and separate; Upper water is discharge water, and lower floor's mud is materialized mud, is all back to microorganism flocculation sedimentation tank.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58119391A (en) * | 1982-01-06 | 1983-07-15 | Kubota Ltd | Treatment of sewage |
| DE19737373A1 (en) * | 1996-12-21 | 1998-06-25 | Korea Inst Construction Tech | Biological removal of both nitrogen and phosphorus from waste water |
| CN101955303A (en) * | 2010-09-29 | 2011-01-26 | 邹海明 | Treatment method of dye wastewater |
| CN102633404A (en) * | 2012-03-16 | 2012-08-15 | 山东天畅环保工程有限公司 | Treatment process for comprehensive wastewater |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58119391A (en) * | 1982-01-06 | 1983-07-15 | Kubota Ltd | Treatment of sewage |
| DE19737373A1 (en) * | 1996-12-21 | 1998-06-25 | Korea Inst Construction Tech | Biological removal of both nitrogen and phosphorus from waste water |
| CN101955303A (en) * | 2010-09-29 | 2011-01-26 | 邹海明 | Treatment method of dye wastewater |
| CN102633404A (en) * | 2012-03-16 | 2012-08-15 | 山东天畅环保工程有限公司 | Treatment process for comprehensive wastewater |
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