CN102923921B - Traditional Chinese medicine wastewater treatment process - Google Patents
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Abstract
The invention discloses a traditional Chinese medicine wastewater treatment process. The process has the following beneficial effects: after the traditional Chinese medicine wastewater is pretreated and the pH value of the traditional Chinese medicine wastewater is adjusted to be 8-9, the traditional Chinese medicine wastewater is subjected to anaerobic treatment, biochemical reflux treatment and filter and drain treatment; by combining the treatment methods, the traditional Chinese medicine wastewater can be effectively treated, so that the effluent of the treated traditional Chinese medicine wastewater can reach the primary standard (GB8978-1996); and the process has good environmental and economic benefits.
Description
Technical field
The present invention relates to a kind of waste water treatment process, particularly a kind of traditional Chinese medicine wastewater treatment process.
Background technology
Traditional Chinese medicine wastewater is mainly from production plant, produces washing in the processes such as bubble boiling medicinal material, flushing, preparation.Traditional Chinese medicine wastewater comprises the former medicine washing water in production process, in the sewage producing in the unit operations such as medicine original juice raffinate, filtration, distillation, extraction, production unit washing, floor wash water, steam condensate and processing ion exchange resin acid-base solution and water etc.
Pollutent in traditional Chinese medicine wastewater is broadly divided into two classes: a class is water miscible, and another kind of is insoluble.Water miscible pollutent main component is carbohydrate (polysaccharide is main), protein, xylogen, organic acid, resin, mucus fat, alkaloid, amino acid, steroidal, terpene, phenols, tannin, alcohol compound etc. and the nontoxic pigment introduced by film-making operation; Insoluble pollutent main composition thing is subparticle and other suspended substance etc. of silt, vegetable fibre (as xylogen etc.), inorganic salt.
In Chinese Traditional Medicine, different pharmaceutical kind is different with production technique, and the waste water quality and the water yield that produce have very big difference, and because the replacement of products cycle is short, waste water quality, the water yield often fluctuate, extremely unstable.
Traditional Chinese medicine wastewater is that a kind of pollutant kind is various, the high concentration hard-degraded organic waste water of complicated, though this waste water is nontoxic harmful, because concentration is high, organic content large, directly discharge meeting causes severe contamination to environment.How effectively processing traditional Chinese medicine wastewater is the problem that Chinese herbal medicine industry development must solve.
In wastewater treatment practice, be applied to multiple water treatment technology, can be divided into according to action principle: four kinds of Physical, chemical method, physico-chemical processes and biochemical process.Wherein biochemical process is the method for the most effectively processing traditional Chinese medicine wastewater, because contain a large amount of polymer hardly degraded organic substances in traditional Chinese medicine wastewater, biochemical process can be processed a large amount of polymer hardly degraded organic substance decomposing in traditional Chinese medicine wastewater effectively, but in actual production, owing to conventionally containing all kinds of organic acids in Chinese medicinal material composition, in the process Chinese medicinal materials of medicine, part organic acid enters waste water aborning, it is acid making traditional Chinese medicine wastewater, and the comparatively stable organic acid buffer system of easy formation, sour environment is not suitable for microbial growth in the anaerobic treatment in later stage and aerobic treatment, and organic acid buffer system is owing to having stronger stability, the microorganism of biochemical system is had to stronger restraining effect, so organic acid buffer system improves and has larger negative impact the processing efficiency of biochemical system.
Summary of the invention
The object of the invention is to overcome existing above-mentioned deficiency in prior art, a kind of traditional Chinese medicine wastewater treatment process is provided, make traditional Chinese medicine wastewater after treatment meet emission standard completely, reach good treatment effect.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of traditional Chinese medicine wastewater treatment process, comprises the following steps:
(1) pre-treatment, adjusts pH to 8～9 to traditional Chinese medicine wastewater, removes impurity, stirs and makes water quality homogenizing;
(2) anaerobic treatment, step (1) traditional Chinese medicine wastewater after treatment is sent into and in anaerobic pond, carried out anaerobic treatment, described anaerobic treatment is two stage UASB anaerobic treatment, after two stage UASB anaerobic treatment, precipitate, mud-water separation, the traditional Chinese medicine wastewater that separation is obtained adds water and allocates, and making traditional Chinese medicine wastewater CODCr concentration is 500～1000mg/L, and mud is delivered to sludge thickener processing;
(3) backflow biochemical treatment, the traditional Chinese medicine wastewater that step (2) is obtained is sent into active sludge aerobic pond and catalytic oxidation Aerobic Pond backflow biochemical treatment;
(4) filter outer row, the traditional Chinese medicine wastewater that step (3) is obtained enters clean water basin after sand filter filters, and for the traditional Chinese medicine wastewater after adaptation step (2) anaerobic treatment, redundance is arranged outward, and mud is delivered to sludge thickener processing.
Traditional Chinese medicine wastewater treatment process provided by the invention, the fully regulating water quality of pre-treatment in early stage, removes the biological inhibition material in traditional Chinese medicine wastewater, makes traditional Chinese medicine wastewater biodegradability good; Show by a large amount of experiment of contriver and statistics, when the pH of traditional Chinese medicine wastewater value is 8～9 time, the biochemical treatment in later stage can reach best treatment effect, by the array mode of anaerobic and aerobic, can effectively process traditional Chinese medicine wastewater, the waste water after anaerobic treatment is added water and regulates CODCr concentration at 500～1000mg/L, can provide good condition for generate subsequent reflow treatment, biochemical reflow treatment efficiency is improved, thereby whole traditional Chinese medicine wastewater treatment system efficiency is improved.
Adopt traditional Chinese medicine wastewater treatment process provided by the invention, can effectively process traditional Chinese medicine wastewater, especially with the mixing traditional Chinese medicine wastewater take Chinese patent medicine as main comprehensive pharmacy corporation discharge, solved current domestic traditional Chinese medicine wastewater process in because traditional Chinese medicine wastewater is high containing hardly degraded organic substance, Pollutant levels, the large adjusting difficulty causing of impact load, process difficult industry restriction problem, make traditional Chinese medicine wastewater water outlet after treatment can reach (GB8978-1996) primary standard.
Preferably, in described step (1), the pH value after traditional Chinese medicine wastewater adjusting is 8～8.5.
Preferably, in described step (1), calcium hydroxide or sodium hydroxide add the interpolation of employing classification cycle reaction unit; Described circulating reaction transposition comprises the first tank body and the second tank body, the top of described the first tank body is provided with admission port, in described the first tank body, be provided with whipping appts, between described the first tank body and the second tank body, be provided with middle siphunculus, one end of described middle siphunculus is communicated to the inside of the first tank body by the side of the first tank body, the other end of described middle siphunculus is communicated to the inside of the second tank body by the top of the second tank body, the side of described the second tank body is provided with water port.
Preferably, in the step for traditional Chinese medicine wastewater (4) in described step (2), the water in clean water basin is allocated.
The organic acid buffer system that this technique is used classification cycle reaction unit to destroy traditional Chinese medicine wastewater has significant effect for the biodegradability that improves traditional Chinese medicine wastewater, adding in process, the traditional Chinese medicine wastewater pH that can enter classification cycle reaction unit by real-time detection changes the total amount that adds of controlling accurately the alkaline medicine such as white lime or sodium hydroxide.And only need in the classification cycle reaction unit of low capacity, add the alkaline medicines such as excessive white lime or sodium hydroxide, and need in the body of pond, not add in enormous quantities excesses of basic medicine, thereby can effectively reduce the dosage of alkaline medicine, in guaranteeing the destruction of organic acid buffer system, reduce excessive calcium ion or the sodium ion restraining effect to follow-up biochemical treatment.
Preferably, in described active sludge aerobic pond and catalytic oxidation Aerobic Pond, be equipped with biologic packing material and sprinkling system.
Biologic packing material can enhanced activity sludge aerobic pond and catalytic oxidation Aerobic Pond in the ability of aerobic biochemical system anti-shock loading; Because glucide in waste water is more, when aeration, can produce a large amount of foams, can carry a part of mud secretly, the effect of sprinkling system is froth breaking, can effectively prevent sludge loss.
Preferably, described sand filter also comprises recoiling device, and described recoiling device is for being provided with rising pipe and escape pipe in sand filter bottom, and rising pipe is connected with backwash pump, and escape pipe is connected with blower fan.The impurity filtering for back flushing sand filter filtrate, recovers the adsorption filtration ability of filtrate to impurity in waste water and pollutent.Described recoiling device is in order to routine cleaning sand filter, thereby makes equipment have cleaning apparatus for self, and maintenance of the equipment is convenient.Further preferred, recoiling device water for cleaning adopts the water in described clean water basin.
Compared with prior art, beneficial effect of the present invention
Traditional Chinese medicine wastewater treatment process provided by the invention, the fully regulating water quality of pre-treatment in early stage, especially modulate traditional Chinese medicine wastewater pH value between 8～9, can provide good condition for organism in microbiological deterioration waste water in follow-up biochemical treatment, and remove the biological inhibition material in traditional Chinese medicine wastewater, make traditional Chinese medicine wastewater biodegradability good; By the array mode of anaerobic and aerobic, can effectively process traditional Chinese medicine wastewater, waste water after anaerobic treatment is added water and regulates CODCr concentration at 500～1000mg/L, can provide suitable condition for generate subsequent reflow treatment, biochemical reflow treatment efficiency is improved, thereby whole traditional Chinese medicine wastewater treatment system efficiency is improved.
Adopt traditional Chinese medicine wastewater treatment process provided by the invention can effectively process take traditional Chinese medicine wastewater as main this class high density of mixing pharmacy waste water, containing difficult degradation macromole, the waste water that impact load is high, and can effectively adapt to change the impact on Sewage treatment systems because enterprise production changes the water quality and quantity causing, also can effectively adapt to the anaerobism causing due to circular temperature loads, aerobic biochemical effect fluctuation, mix pharmacy waste water through processing, water outlet can reach (GB8978-1996) primary standard, it is difficult that the mixing pharmacy waste water that has solved current domestic comprehensive herbal pharmaceutical enterprise regulates, process difficult industry restriction problem.Described unit is equipped with effective cleaning apparatus for self, and maintenance of the equipment is convenient.
Accompanying drawing explanation
Fig. 1 is classification cycle reaction unit structural representation of the present invention;
Fig. 2 is classification cycle reaction unit vertical view shown in the present.
Mark in figure: the first tank body-101; The second tank body-102; Admission port-1a; Water port-1c; Whipping appts-2; Water pump-6; Middle siphunculus-7; Secondary reaction water-in-8; The second water inlet pipe-9.
Embodiment
Below in conjunction with test example and embodiment, the present invention is described in further detail.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on content of the present invention all belong to scope of the present invention.
Embodiment 1
Adopt the mixing factory effluent of Chengdu, Sichuan herbal pharmaceutical factory, mainly by Chinese traditional medicine wastewater treatment, wash bottle, wash plug waste water, resin regeneration waste water, machine maintenance waste water, sanitary wastewater, quality inspection waste water, the seven class waste water compositions such as the raffinate after ethanol distillation reclaims, waste water COD Cr mean value is 18150mg/L, pH value is 4.6, and ammonia nitrogen mean value is 1100mg/L.Adopt classification cycle device to carry out adjust pH to traditional Chinese medicine wastewater, the part water in equalizing tank is delivered to the second tank body of classification cycle reactor with reaction unit recycle pump, turn on agitator, and add white lime, pH is adjusted to 10 left and right.Another part water in equalizing tank is delivered to simultaneously to the first tank body of classification cycle reactor with reaction unit recycle pump, current enter the first tank body lower part in the mode of tangential flow, so that the water in the first tank body rotates, the water outlet gravity flow of the second tank body enters the first tank body top, after mixing with the water of the first tank base, then enter equalizing tank by top gravity flow.Part III water in equalizing tank is delivered to equalizing tank bottom with reaction unit recycle pump simultaneously, so that water body is formed to disturbance, accelerate the pH regulator of the first tank body water outlet to waste water in equalizing tank.Determine the dosage of white lime according to the variation of pH, check the wastewater pH that enters the second tank body, in the time that equalizing tank wastewater pH is stabilized in 8.5 left and right, equalizing tank waste water is entered to two stage UASB anaerobic pond with reaction unit recycle pump.Two stage UASB anaerobic pond waste water after treatment enters the biochemical operation processing that refluxes again, and the waste water after backflow biochemical treatment is after sand filter filters, and effluent quality is limpid, colourity is low, measuring water outlet CODCr mean value is 81mg/L, and pH mean value is 7.2, and ammonia nitrogen mean value is 2.26mg/L.
Adopt the mixing factory effluent of Sichuan herbal pharmaceutical factory, mainly decocting juice and extraction process raffinate, cleaning of evaporator (bottle) water, ground flushing water, boiler house draining and plant area's sanitary sewage etc. by pharmaceutical raw material washing water, former medicine forms, in water, CODCr is 11000mg/L, pH value is 4.9, and ammonia-nitrogen content is 300mg/L.Adopt classification cycle device to carry out adjust pH to traditional Chinese medicine wastewater, the part water in equalizing tank is delivered to the second tank body of classification cycle reactor with reaction unit recycle pump, turn on agitator, and add sodium hydroxide, pH is adjusted to 10 left and right.Another part water in equalizing tank is delivered to simultaneously to the first tank body of classification cycle reactor with reaction unit recycle pump, current enter the first tank body lower part in the mode of tangential flow, so that the water in the first tank body rotates, the water outlet gravity flow of the second tank body enters the first tank body top, after mixing with the water of the first tank base, then enter equalizing tank by top gravity flow.Part III water in equalizing tank is delivered to equalizing tank bottom with reaction unit recycle pump simultaneously, so that water body is formed to disturbance, accelerate the pH regulator of the first tank body water outlet to waste water in equalizing tank.Determine the dosage of sodium hydroxide according to the variation of pH, check the wastewater pH that enters the second tank body, in the time that equalizing tank wastewater pH is stabilized in 8.5 left and right, equalizing tank waste water is entered to two stage UASB anaerobic pond with reaction unit recycle pump.Two stage UASB anaerobic pond waste water after treatment enters the biochemical operation processing that refluxes again, and the waste water after backflow biochemical treatment is after sand filter filters, and effluent quality is limpid, colourity is low, the equal CODCr of the level that determines is 88.3mg/L, and pH value is 7.5, and ammonia nitrogen mean value is 2.96mg/L.
Embodiment 3
Adopt the mixing factory effluent of Sichuan herbal pharmaceutical factory, be mainly made up of extractor Cleaning Wastewater, starting material cleaning and immersion waste water, mill floor wash-down water, in water, CODCr is 8000mg/L, and pH value is 6, and ammonia-nitrogen content is 58mg/L.Adopt classification cycle device to carry out adjust pH to traditional Chinese medicine wastewater, the part water in equalizing tank is delivered to the second tank body of classification cycle reactor with reaction unit recycle pump, turn on agitator, and add white lime, pH is adjusted to 10 left and right.Another part water in equalizing tank is delivered to simultaneously to the first tank body of classification cycle reactor with reaction unit recycle pump, current enter the first tank body lower part in the mode of tangential flow, so that the water in the first tank body rotates, the water outlet gravity flow of the second tank body enters the first tank body top, after mixing with the water of the first tank base, then enter equalizing tank by top gravity flow.Part III water in equalizing tank is delivered to equalizing tank bottom with reaction unit recycle pump simultaneously, so that water body is formed to disturbance, accelerate the pH regulator of the first tank body water outlet to waste water in equalizing tank.Determine the dosage of white lime according to the variation of pH, check the wastewater pH that enters the second tank body, in the time that equalizing tank wastewater pH is stabilized in 8.0 left and right, equalizing tank waste water is entered to two stage UASB anaerobic pond with reaction unit recycle pump.Two stage UASB anaerobic pond waste water after treatment enters the biochemical operation processing that refluxes again, and the waste water after backflow biochemical treatment is after sand filter filters, and effluent quality is limpid, colourity is low, measuring water outlet CODCr mean value is 78.3mg/L, and pH value is 7.2, and ammonia nitrogen mean value is 3.1mg/L.
Comparative example
For the mixing factory effluent of Chengdu, Sichuan herbal pharmaceutical factory in embodiment 1, mainly by Chinese traditional medicine wastewater treatment, wash bottle, wash plug waste water, resin regeneration waste water, machine maintenance waste water, sanitary wastewater, quality inspection waste water, the seven class waste water compositions such as the raffinate after ethanol distillation reclaims, waste water COD Cr is 18150mg/L, pH value is 4.6, and ammonia-nitrogen content is 1100mg/L.The original sewage treatment facility main process of this pharmaceutical factory is " acidication+bio anaerobic method+biology aerobic method ", in factory various waste water through pipe network collect laggard enter grille well, after removing impurity, enter equalizing tank, all kinds of waste water enters hydrolysis acidification pool after equalizing tank mixes, waste water enters bio anaerobic pond after hydrolysis acidification pool is processed, carry out anaerobic treatment, waste water after treatment enters contact-oxidation pool, carry out aerobic treatment, waste water after treatment enters settling tank, and waste water discharges after precipitation process.The water quality of discharge is as follows: water outlet CODCr mean value is 7460mg/L, and pH value is 7.2, and ammonia nitrogen mean value is 350mg/L.
Claims (3)
1. a traditional Chinese medicine wastewater treatment process, is characterized in that, described technique comprises the following steps:
(1) pre-treatment, adjusts pH to 8～9 to traditional Chinese medicine wastewater, removes impurity, stirs and makes water quality homogenizing;
(2) anaerobic treatment, step (1) traditional Chinese medicine wastewater after treatment is sent into and in anaerobic pond, carried out anaerobic treatment, described anaerobic treatment is two stage UASB anaerobic treatment, after two stage UASB anaerobic treatment, precipitate, mud-water separation, the traditional Chinese medicine wastewater that separation is obtained adds water and allocates, and making traditional Chinese medicine wastewater CODCr concentration is 500～1000mg/L, and mud is delivered to sludge thickener processing;
(3) backflow biochemical treatment, the traditional Chinese medicine wastewater that step (2) is obtained is sent into active sludge aerobic pond and catalytic oxidation Aerobic Pond backflow biochemical treatment;
(4) filter outer row, the traditional Chinese medicine wastewater that step (3) is obtained enters clean water basin after sand filter filters, and for the traditional Chinese medicine wastewater after adaptation step (2) anaerobic treatment, redundance is arranged outward, and mud is delivered to sludge thickener processing;
Described adjust pH adopts classification cycle reaction unit to add white lime or sodium hydroxide; Described classification cycle reaction unit comprises the first tank body and the second tank body, the top of described the first tank body is provided with admission port, in described the first tank body, be provided with whipping appts, between described the first tank body and the second tank body, be provided with middle siphunculus, one end of described middle siphunculus is communicated to the inside of the first tank body by the side of the first tank body, the other end of described middle siphunculus is communicated to the inside of the second tank body by the top of the second tank body, the side of described the second tank body is provided with water port;
In described active sludge aerobic pond and catalytic oxidation Aerobic Pond, be equipped with biologic packing material and sprinkling system;
Described sand filter also comprises recoiling device.
2. traditional Chinese medicine wastewater treatment process as claimed in claim 1, is characterized in that, described in step (1), pH value is 8～8.5.
3. traditional Chinese medicine wastewater treatment process as claimed in claim 1, is characterized in that, adopts white lime adjust pH in step (1).
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| CN103319058A (en) * | 2013-07-18 | 2013-09-25 | 山东太平洋环保有限公司 | Traditional Chinese medicine extraction wastewater treatment system and technology |
| CN103739150B (en) * | 2013-11-15 | 2015-06-17 | 安徽省绿巨人环境技术有限公司 | Medicinal auxiliary material production wastewater treatment technology |
| CN104150683A (en) * | 2014-07-10 | 2014-11-19 | 唐国民 | Advanced treatment device for traditional Chinese medicine wastewater and treatment method thereof |
| CN105314794A (en) * | 2014-09-28 | 2016-02-10 | 苏州市白云环保工程设备有限公司 | Sodium carboxymethyl cellulose production wastewater treatment process |
| CN105016584B (en) * | 2015-08-11 | 2017-11-07 | 重庆大学 | Chinese medicine slag waste liquid circulation is reused in the method for Chinese medicine slag fermentation |
| CN109553220A (en) * | 2018-12-30 | 2019-04-02 | 金七药业股份有限公司 | Reduce the method that Radix Notoginseng extracts chroma in waste water |
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