178results about "Sludge detoxification" patented technology

The invention belongs to the field of solid waste recycling, and relates to a hematite modified rice hull-based biochar material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out ultrasonic treatment on rice husks in an ethanol solution, then soaking the treated rice husks in a mixed solution of methanol and formalin for activation, carrying out vacuum filtration and drying, and carrying out anaerobic calcination under the protection of a nitrogen atmosphere to obtain rice husk-based biochar; the method comprises the following steps: soaking rice husk-based biochar in an acid solution, and carrying out microwave digestion on the acid-modified rice husk-based biochar to obtain chemically-modified rice husk-based biochar; adding into a solution containing ferrous sulfate, fully stirring, and then carrying out hydrothermal treatment to obtain the hematite modified rice hull based biochar material. The method can significantly improve the conversion rate of organic matters in the sludge, increase the accumulated yield of biogas, effectively reduce the biotoxicity of heavy metals in the sludge, facilitate the resource utilization of the sludge, and have important significance for solving the environmental risk problem of the sludge.

An equipment for in-situ restoration of sediment, including an amphibious platform and following devices provided on the amphibious platform: a screw suction device, one end of which is hinged to one end of the amphibious platform, and the other end can extend into the sediment for sucking up the sediment; a dehydration device that is provided downstream of the screw suction device and communicates with one end of the screw suction device; a sediment treatment device that is provided downstream of the dehydration device for treating the sediment and processing it into a planting base; a grass blanket processing device that is provided downstream of the sediment treatment device for planting submerged plants on the planting base to form a submerged grass blanket; a grass blanket paving device, one end of which is close to the grass blanket processing device, and the other end extends toward the screw suction device and into the water; a drainage pipe that respectively communicates with the dehydration device and the sediment treatment device; and a hopper through which the sediment is conveyed between the dehydration device and the sediment treatment device. In the invention, the highly polluted sediment is subjected to bio-safety disposal to form a planting base for the growth of submerged vegetation, so as to realize the in-situ restoration of the sediment of rivers and lakes.

The invention discloses a magnetic field vortex sludge and excrement treatment system, and relates to the technical field of sludge treatment, the magnetic field vortex sludge and excrement treatment system comprises a stirring pool, a conveying pump is arranged above the stirring pool, a temporary storage box is arranged on the right side of the stirring pool, and the stirring pool is communicated with a feeding port of the conveying pump through a first connecting pipe; a first electromagnetic valve is arranged on the second connecting pipe, an agent adding device is arranged above the temporary storage box, a magnetic field vortex treatment device is arranged on the right side of the agent adding device, and a heat dissipation device is arranged on the right side of the magnetic field vortex treatment device. Sewage, sludge and feces in the stirring tank are conveyed into the temporary storage tank through the conveying pump, the agent adding device adds a water treatment additive into the temporary storage tank, the sewage, the sludge and the feces can be conveniently treated by the magnetic field vortex treatment device, and the heat dissipation device dissipates heat of the magnetic field vortex treatment device.

The invention discloses a method for synergistically hydro-thermally treating sludge based on tea residue and organic acid, which comprises the following steps: mixing sludge with organic acid and tea residue, and performing hydro-thermal treatment and dehydration treatment on the obtained mixed slurry to obtain filtrate and a mud cake. According to the method for carrying out the synergistic hydrothermal treatment on the sludge based on the tea residues and the organic acid, the hydrothermal reaction temperature can be remarkably reduced under the synergistic effect of the tea residues and the organic acid, meanwhile, the sludge is subjected to the synergistic hydrothermal treatment through the organic acid and the tea residues, the dehydration performance of the sludge can be effectively improved, and meanwhile generation of nondegradable organic matter such as melanoidins can be effectively inhibited; therefore, efficient, environment-friendly, recycling and low-cost treatment of the sludge can be realized by fully utilizing the characteristics of the organic acid and the tea residues and cooperating with a hydrothermal treatment technology, and the method has the advantages of low reaction temperature, high treatment efficiency, low energy consumption, good dehydration effect, greenness, environmental protection and the like; wide application prospects and popularization values are realized.

The invention discloses a sludge treatment method and system, and relates to the field of solid waste treatment, and the method specifically comprises the following operation steps: S1, multi-frequency resonance pretreatment: destroying a sludge colloid structure through stepped mechanical vibration: collapsing an extracellular polymer network at a low frequency, breaking down microbial cell walls at an intermediate frequency to release intracellular water, pathogenic bacteria are inactivated through a high-frequency cavitation effect; s2, performing electrochemical in-situ flocculation; s3, gradient pressure dehydration; s4, low-temperature mineralization stabilization; and S5, vacuum condensation and recovery. According to the sludge treatment method and system, through stepped low-frequency, medium-frequency and high-frequency mechanical resonance, the colloid structure of the sludge can be directionally damaged, the fluidity of the sludge is remarkably improved, chemical conditioners are remarkably reduced, agent residues and secondary pollution are avoided, pathogens are physically inactivated through the high-frequency cavitation effect, and the treatment effect of the sludge is improved. Micro-nano oxygen bubbles are synchronously generated to strengthen free radical oxidation, and a sterile environment is created for subsequent mineralization.

The invention provides an in-situ curing and repairing method for heavy metals in river sediment. The in-situ curing and repairing method comprises the following steps: S1, detecting the content and physicochemical properties of the heavy metals in the river sediment; s2, designing a repair material formula; s3, preparing and putting a repairing material; s4, mixing and stirring the bottom mud and the repairing material; s5, monitoring and evaluating the repairing effect; and S6, repairing effect feedback and adjustment. According to the method, multiple linear regression, curved surface fitting, self-organizing mapping and mixed density network algorithms are fused, the sediment heavy metal content and physicochemical property data are fully utilized, a repair material formula can be accurately designed, and compared with a traditional single algorithm or empirical formula design, the repair material proportion can better fit the actual pollution condition, and the repair efficiency is improved. The utilization rate of repair materials is improved.

The invention provides a biochar repairing agent for marine sediments and a preparation method of the biochar repairing agent, and belongs to the technical field of repairing agents. The preparation method comprises the following steps: carbonizing straws, modifying by phosphoric acid and concentrated nitric acid, depositing ferroferric oxide-titanium dioxide, loading UiO-66-(COOH) 2 on the surface, coupling cyclodextrin-MOF and chitosan, crosslinking, performing magnet separation, washing and drying to obtain the biochar repairing agent for the marine sediments. The biochar repairing agent for the marine sediments prepared by the invention has a relatively large specific surface area and a plurality of coordination groups, can better fix heavy metal ions in the marine sediments, also has a photocatalytic degradation effect on organic pollutants, and is good in mechanical strength, easy to store and transport, safe, environment-friendly and easy to separate; wide application prospects are realized.

The invention discloses a mine remediation system and method based on bottom mud regeneration and bamboo medicine symbiosis, and belongs to the technical field of environment remediation and resource recycling, the mine remediation system comprises the following modules: a bottom mud targeted activation module for converting polluted bottom mud into a mine remediation matrix through heavy metal gradient passivation and organic matter directional activation treatment; the bamboo-medicine-shrub-arbor three-dimensional configuration module is used for constructing a bamboo forest layer, a medicine layer and a grass-shrub-arbor composite layer in the restoration area to form multi-layer vegetation configuration; the water and soil joint control module is used for monitoring the soil moisture content, the vegetation growth state and the water and soil loss risk in real time and dynamically regulating and controlling the water and fertilizer conditions through an intelligent algorithm; through targeted activation of the bottom mud, composite planting of bamboo and medicine, three-dimensional configuration of grass, shrub and arbor and dynamic regulation and control of water and fertilizer, cooperative treatment of ecological restoration and resource recycling of the mine is achieved.

The present invention relates to the field of sludge treatment technology, and more specifically, to a method for solidifying arsenic in high-arsenic sludge using clay and copper slag. The method involves drying the high-arsenic sludge at 105°C for 12 hours and grinding it to a particle size of less than 0.5 mm to obtain a dry material. The dry material is then mixed evenly with clay powder, copper slag, and coal powder. Water is then added, stirred at room temperature for a pre-reaction of 6 hours, and poured into a crucible to obtain a paste-like mixture A. The dry mixture A is then calcined at 850-900°C for 20-40 minutes under a protective atmosphere. The reaction product, after natural cooling, is then used as a roadbed material, for example. This method utilizes clay and copper slag calcination to treat high-arsenic sludge, resulting in low arsenic and other heavy metal leaching toxicity and excellent stability, while also fully utilizing metallurgical solid waste.

The invention discloses a liquid treatment agent for red mud harmless treatment and a preparation method thereof.The liquid treatment agent comprises a treatment agent A and a treatment agent B. The treatment agent A is formed by mixing hydrochloric acid and sulfuric acid, and the treatment agent B is prepared from malic acid, acetic acid, phthalic acid monoester, a solvent and an adsorbent, the mass fraction of the malic acid is 20%-40%, the mass fraction of the acetic acid is 20%-40%, the mass fraction of the phthalic acid monoester is 15%-25%, the mass fraction of the solvent is 5%-15%, and the mass fraction of the adsorbent is 5%-15%. The red mud is subjected to primary treatment by using the liquid treatment agent A, and then the red mud subjected to primary treatment is treated again by using the liquid treatment agent B, so that the alkalinity of the red mud can be effectively reduced, and various heavy metals, fluorides, radioactive elements and trace toxic elements in the red mud can be effectively removed; the environment pollution caused by the loss of the harmful substances is avoided, so that the innocent treatment of the red mud is realized.

To provide a system for neutralizing ammonia-containing waste liquid, capable of efficiently neutralizing ammonia-containing waste liquid. [Solution] A neutralization treatment system 100 for ammonia-containing waste liquid neutralizes waste liquid WF containing ammonia AM. The neutralization treatment system 100 for ammonia-containing waste liquid includes one or more sludge tanks 700, a sludge discharge line 160 that supplies the waste liquid WF to the sludge tank 700, a neutralizing agent supply line 170 that supplies a neutralizing agent N to the sludge tank 700, and a sensor 720 that measures the pH of the waste liquid WF or the ammonia concentration of the waste liquid WF.

The invention discloses a dredged sludge recycling and abandoned mine high and steep slope ecological restoration method, and belongs to the technical field of ecological restoration in environmental engineering. Dredged sludge is subjected to pretreatment and solid-liquid separation, and large-particle impurities and part of water are removed; the pretreated sludge is subjected to organic matter removal treatment, and organic matter in the sludge is efficiently removed; carrying out heavy metal stabilizing treatment on the sludge without the organic matters, and fixing heavy metal ions in the sludge; the dredged sludge subjected to heavy metal stabilization treatment is mixed with a soil conditioner, the structure and bioavailability of the matrix are improved, and the matrix material suitable for mine ecological restoration is prepared; the prepared matrix material is applied to high and steep slopes of abandoned mines for vegetation restoration and ecological restoration. The technology is high in treatment efficiency, low in cost and environmentally friendly, the stability and the ecological restoration effect of the mine slope are remarkably improved, and the method has important engineering application value and popularization prospects.

The invention discloses a sludge synergistic curing agent based on microbial mineralization and nano-compounding and a preparation method thereof. The sludge synergistic curing agent is prepared from the following components in percentage by mass: 20%-30% of fly ash, 15%-20% of sulphoaluminate cement, 10%-15% of modified phosphogypsum powder, 15%-20% of charcoal loaded nano iron, 5%-10% of attapulgite, 6%-10% of polyaspartic acid-co-acrylamide, 4%-5% of sodium carboxymethyl cellulose, 3%-5% of silica fume, 1%-3% of magnesium carbonate and 1%-2% of tartaric acid. The sludge synergistic curing agent is used for innocent treatment of river dredging sludge and industrial sludge, and rapid dehydration and high-strength curing of sludge and long-acting stabilization of pollutants are realized through synergism of the adsorption performance of the biochar, the reduction stabilization effect of the nano-iron and the cementation effect of a composite gel system.

The invention discloses a sludge treatment process for a sewage treatment plant. The invention belongs to the technical field of civil engineering sludge treatment, and realizes double breakthrough of environmental benefits and economic benefits through multi-stage cooperation and resource closed-loop design. The organic matter decomposition efficiency is remarkably improved through the synergistic effect of the biochar-loaded nano material, electron transfer in the anaerobic digestion process is accelerated through the unique conductive network structure of the biochar-loaded nano material, the methane generation rate breaks through the bottleneck of a traditional technology, and biochar serves as a core medium to directly participate in building of a building body; the porous characteristic and the adsorption performance of the filter material are integrated into a filter interlayer and an ecological slope protection of a hydraulic structure to replace a traditional sand filter material and a concrete additive, so that the construction process is simplified, and the structural functionality is enhanced. Process equipment and a building space adopt a collaborative design principle, and a guide wall of an anaerobic reactor and a refractory lining of a pyrolyzing furnace are integrally poured in combination with the characteristics of a charcoal-based material, so that the matching precision of an equipment foundation and a main body structure is greatly improved.

The invention belongs to the technical field of sludge dewatering, and provides a method for promoting sludge disinfection while improving sludge dewatering performance. The method comprises the following steps: sequentially carrying out natural sedimentation and filtration on sludge to obtain pretreated sludge; and mixing the pretreated sludge with a Fe < 2 + > compound, adjusting the pH value of the mixed solution to 4-6 by using an acid, and reacting the obtained acidic sludge with dichloro hydantoin (DCDMH). The invention firstly provides a method for improving the sludge dewatering performance and synchronously disinfecting and sterilizing the sludge, the method has a better dewatering effect and a better disinfecting effect, the CST reduction rate can reach more than 30%, and the SRF reduction rate can reach more than 60%; the microbe inactivation rate can reach 30% or above, and the total flora number of fecal large intestines is 1t; 100 pieces / g DS. According to the invention, the sludge is killed by using the dual effects of dissolving and slowly releasing HClO by DCDMH and activating DCDMH by Fe < 2 + > to generate strong oxidation free radicals, so that the disinfection and sterilization efficiency can be greatly improved.

The invention discloses a calcium-based composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: cleaning and drying high-porosity straw biomass charcoal particles; mixing the biochar particles with calcium peroxide, and enabling the powdery calcium peroxide to enter pores of the biochar through vibration to obtain the biochar loaded with the calcium peroxide; mixing the calcium peroxide-loaded biochar particles and calcium hydroxide-containing minerals according to a certain proportion to obtain a calcium-based composite material; the calcium-based composite material is added into dried sludge, the adding amount accounts for 5-15 wt.% of the dry basis mass of the sludge, then a lignin binder is added, compression molding is performed, the calcium-based composite material is added in the pyrolysis process, the sulfur fixation rate can be larger than 60%, most of nitrogen is converted into ammonia, hydrogen cyanide is greatly reduced, synergistic sulfur fixation and nitrogen control in sludge pyrolysis are achieved, and the sulfur fixation and nitrogen control efficiency is improved. And the emission of pollution gas is reduced.

The invention belongs to the technical field of sludge treatment, and particularly discloses an aquaculture bottom mud collaborative disinfection method which comprises the following steps: detecting the water quality of water in a culture pond, selecting a beneficial microbial preparation according to a detection result, uniformly putting the microbial preparation into the culture pond, and draining the water in the culture pond to expose bottom mud; ozone is introduced into the bottom mud; adding a chemical disinfectant into the bottom mud; carrying out physical disinfection on the bottom mud of which the moisture is drained; and scattering a repairing agent on the physically disinfected bottom mud, sealing for 10-15 days, putting the bottom mud into the culture pond again, and putting aquatic plants and benthic organisms into the culture pond. According to the collaborative disinfection method for the aquaculture bottom mud, the advantages of a biological disinfection method, a chemical disinfection method and a physical disinfection method are integrated, harmful organisms such as pathogenic bacteria and parasites in the bottom mud can be effectively killed, the content of organic matter in the bottom mud is reduced, and the quality of the bottom mud is improved.

A method for production of pure phosphates comprises providing (S10) of a strip solution being an aqueous solution of one of monoammonium phosphate and monopotassium phosphate, loaded with stripped phosphate from a feed liquid comprising phosphoric acid contaminated by heavy metals and iron A base is added (S20) into the separated strip solution raising the pH to 2 – 5.5, forming of a heated solution and causing compounds comprising iron and phosphate to precipitate. A precipitant, precipitating heavy metals, is added (S30). Precipitated compounds comprising iron and phosphate and precipitated heavy metal compounds are separated (S40). The heated filtered solution is thereafter cooled off (S50) into a cooled solution, causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed (S60) from the cooled solution. The cooled solution is recirculated (S70) for use as input strip solution in the stripping operation. A system for production of pure phosphates is also disclosed.

The present invention discloses a geotube bag capable of stabilizing heavy metals and achieving efficient dehydration, comprising: an inner fabric layer, the inner side of which is provided with a heavy metal adsorption layer containing a heavy metal adsorbent; an intermediate fabric layer, the intermediate layer located outside the inner fabric; the intermediate fabric having a greater hydrophilicity than the inner fabric; and an average pore size larger than that of the intermediate fabric; and an outer fabric layer located outside the intermediate fabric; the outer fabric having a greater hydrophilicity than the intermediate fabric and an average pore size larger than that of the outer fabric. The geotube bag's unique structure improves dehydration efficiency, avoids secondary contamination of sediment by the use of flocculants, and improves treatment efficiency.

A neutralization processing system for an ammonia-containing waste fluid, includes: one or more sludge tanks; a sludge discharge line configured to supply the waste fluid to the sludge tank; a neutralizer supply line configured to supply a neutralizer to the sludge tank; and a sensor configured to measure pH of the waste fluid or an ammonia concentration of the waste fluid.

Technologies are described for a process for in situ treatment of contaminated soil(s), water, waste, sludge, wastewater, sediment, other contaminated matrix, or combination thereof. The process comprises applying a reactive or treatment material and an adjunct to the contaminated matrix or in a flow path of the contaminant in the matrix. The adjunct is controllably released into the matrix and contributes to the treatment of the soil(s), water, waste, sludge, wastewater, sediment, other contaminated matrix, or combination thereof.

The application discloses an environment-friendly and efficient solidification and stabilization agent for calcium fluoride sludge and a preparation method thereof, and comprises the following raw materials in parts by weight: a chemical stabilization agent 20-30 parts, an inorganic solidification agent 60-70 parts, a microwave dehydration aid 1-5 parts and a pH regulator 2-5 parts. The application has the advantages of good treatment effect, solves the problems that the existing calcium fluoride sludge treatment agent has poor treatment effect on calcium fluoride sludge in the preparation process, harmful substances and pollutants in the calcium fluoride sludge are easy to penetrate into underground water or soil, environmental pollution is caused, and the treated sludge cannot reach the environmental protection standard and is disposed or utilized, which leads to the problems of re-releasing harmful substances in the use process and forming secondary pollution.

The animal epidemic disease excrement harmless treatment device comprises a fermentation tank and further comprises a fermentation assembly, an excrement inlet is formed in the top of the fermentation tank, a driving rod fixedly penetrates through the bottom of the fermentation tank, a driving plate is fixedly mounted on the circumferential surface of the driving rod, and a moving hole is formed in the top of the fermentation tank; the fermentation assembly comprises a hollow frame, a shielding plate, a control plate, a control groove, a sealing plate, a sliding groove, a sliding frame, an elastic telescopic plate and an arc-shaped plate, the hollow frame is slidably mounted on the inner wall of the moving hole, the shielding plate is slidably mounted on the inner wall of the hollow frame, and the shielding plate moves leftwards to increase the shielding area of the shielding plate on the excrement inlet; the feeding amount is adjusted according to the excrement type, it can be ensured that the standing time of the excrement in the fermentation tank is matched with the temperature, the harmless treatment effect is further optimized, and the animal excrement feeding amount control device has the advantage that the excrement feeding amount can be controlled according to different animal excrement.

The application discloses a kind of eluent and its preparation method and application, preparation method includes: adding potassium methoxide methanol solution to the trimethylolpropane in molten state, after stirring, vacuumizing, then droping glycidol monomer, after reaction, add methanol, dry, obtain hyperbranched polyglycerol ether;Add carbonyl imidazole to the N,N-dimethylformamide solution of saturated fatty acid, after stirring and mixing, drop to the N,N-dimethylformamide solution of hyperbranched polyglycerol ether, reaction is heated in nitrogen atmosphere, after reaction, the product is treated, obtain temperature-sensitive hyperbranched polyglycidol ether eluent.The eluent prepared in the application can greatly reduce the treatment cost of elution waste liquid while efficiently removing heavy metals.

The invention discloses a disinfection device for livestock and poultry manure treatment, and relates to the technical field of livestock and poultry manure disinfection, the disinfection device comprises a disinfection box, the disinfection box is internally provided with a disinfection tank, the top end of the disinfection box is symmetrically and rotatably connected with a top cover, an inner cavity of the disinfection tank is provided with a rotating roller, and the outer wall of the rotating roller is fixedly connected with a turning rod; the device further comprises a rotating mechanism and a turning mechanism. By arranging the turning mechanism, when the top cover is in a closed state, the motor can run to drive the movable seat to slide at the moment; the movable seat moves to drive the rotating roller to perform displacement operation; at the moment, a sliding block slides along the inner wall of a sliding groove to drive a second straight gear to rotate, the second straight gear rotates to drive a rotating roller to rotate, and the rotating roller rotates to drive a turning rod to rotate to turn over the excrement, so that the excrement is in full contact with oxygen, and then full disinfection operation is achieved.

The invention discloses thermocatalytic degradation equipment and method for reduction treatment of biochemical sludge. The equipment comprises an equipment base, a degradation barrel, a dehydration assembly and a pyrolysis assembly, the degradation cylinder is arranged on the equipment base, and a filter plate is arranged at the lower end of the degradation cylinder; the dehydration assembly comprises an extrusion disc clamped in the degradation barrel, a pushing frame clamped on the equipment base and connected with the extrusion disc, and a driving motor for providing power for the pushing frame; the pyrolysis assembly comprises a sliding heat insulation seat clamped in the extrusion disc, an electric heating rod arranged on the sliding heat insulation seat and a hydraulic oil cylinder for providing power for the heat insulation seat; the equipment disclosed by the invention is reasonable in structural design, the biochemical sludge is subjected to mechanical dehydration treatment before thermocatalytic degradation treatment, so that the volume of the biochemical sludge is effectively reduced, and the reduction treatment of the biochemical sludge is promoted; meanwhile, when the dewatered biochemical sludge is heated, the energy consumption of the equipment is lower, and the equipment is suitable for popularization and application.

The invention discloses a paving and turning type sludge drying treatment device, and relates to the field of sludge treatment equipment, the paving and turning type sludge drying treatment device comprises a rack, and also comprises translation mechanisms symmetrically arranged on two sides of the rack and used for driving the rack to move along a paving path; the paving mechanism comprises a coulter, a turning and throwing motor and a turning and throwing spiral blade, the output end of the turning and throwing motor is fixedly connected with the turning and throwing spiral blade, and the turning and throwing spiral blade rotates and is matched with the rack to move along a paving path so as to flatly spread, turn and rake sludge paved on the outdoor ground / sunlight room ground; the degerming mechanism is arranged on the rack and is used for performing degerming operation on the sludge; the material collecting mechanism comprises a material collecting spiral blade, and the material collecting spiral blade is used for collecting the dewatered sludge to one side of the rack. Through mutual cooperation of the translation mechanism, the paving mechanism, the degerming mechanism and the material receiving mechanism, the problems that in the sludge drying treatment process, energy consumption is high, and the environment is affected are solved.

A granular activated carbon (GAC) reactivation waste product enhanced activated sludge system for removing PFAS from a flow of wastewater and / or landfill includes at least one bioreactor including biomass to receive the feed water and to promote growth of biological flocs, and an impregnation subsystem to receive a flow of biomass and a predetermined amount of GAC reactivation waste product and to blend the biomass with the GAC reactivation waste product to form GAC reactivation waste product-impregnated biological flocs. The impregnation subsystem outputs a flow of GAC reactivation waste product-impregnated biological flocs to the bioreactor such that the GAC reactivation waste product-impregnated biological flocs in the bioreactor adsorb to and remove the PFAS from the treated water, and the bioreactor outputs a flow of GAC reactivation waste product-impregnated biological flocs and treated water. The system also includes at least one secondary clarifier coupled to the bioreactor which separates the GAC reactivation waste product-impregnated biological flocs from the wastewater and / or landfill leachate and produces a flow the treated water.

The invention discloses a continuous treatment device for metal ore flotation wastewater, which comprises a sedimentation tank and a fine washing tank connected through a circulation pipeline, and the bottom of the sedimentation tank is provided with a telescopic moving baffle plate to form tidal sealing so as to simultaneously neutralize and precipitate the wastewater. Heavy metal ions in the flotation wastewater are removed step by step through two chemical precipitation methods, and when a large amount of settled sludge is generated in a neutralization precipitation method, the telescopic and movable partition plate is adopted for tidal movement, so that two layers of settling spaces are formed in the settling pond from bottom to top, and the settling effect is improved. The sludge can be further attenuated in the sedimentation space at the bottom layer, so that the environmental problem caused by direct discharge of the settled sludge is avoided, the treatment efficiency of the sedimentation tank can be improved through the double-layer sedimentation space, and the settled sludge and wastewater can be fed into the sedimentation space at the bottom layer to be settled by opening the baffle after the neutralization is completed; and the three-dimensional space is fully utilized, and meanwhile, continuous precipitation can be ensured.

Basalt selectively adsorbs organic toxic materials, such as dioxins, furans, polychlorinated biphenyls (PCBs), bis(2-ethylhexyl)phthalate, arsenic, mercury, chromium, copper, nickel, zinc, cadmium, lead, and the like, from substances such as sediment, which contains water and the toxic materials.