I. Harmless treatment waste drilling mud plantOverview:The modular and movable complete equipment for treating waste drilling mud and fluid while drilling is a modular skidded equipment specially for treating waste drilling fluid while drilling of oil-gas field. This modular skidded equipment is featured by small size,Website:http://www.dhpetrotools.com, simple structure, low energy consumption, reliable performance, convenient operation, and high efficiency with small floor area, and is specially applicable for drilling team to use as support. After the waste drilling mud and fluid are treated by this equipment, the sludge, drilling cuttings and sewage can be classified and used, and meet the standard requirements; the volume of solid waste and water content of solid waste mud may be reduced by adding special agent. It is no need to dig a mud pit on the site if this equipment is adopted, thus to reduce or eliminate the pollution of mud pit; it can realize the standard treatment and harmless use of drilling wastes.Process flows (It is recommended to show the process flow in drawing and the simple single full line shall be used on the drawing)Equipment compositionsThe waste mud treated while drilling is collected by a collecting system, the drilling cuttings are transported outward directly, and the sand and mud are entered in the gel breaking module; the gel breaker is added and mixed evenly; the mud broken in gel is delivered to the mud-water separation module for separation, and the separated mud cake shall be transported outward; the water separated from mud-water separation module is delivered to the sewage treatment module for advanced oxidation treatment with oxidizing agent added; the treated sewage is delivered to the sewage separation and advanced treatment module for separating flocculate, the separated flocculate is transported outward directly, the clean water is entered in the filtering adsorption device for further treatment, and then discharged after reach to the standard.Process indexes Service Environment, Conditions and Treatment Scope of Complete EquipmentInlet Water IndexesFlowPHSS (mg/L)CODcrOil Content (mg/L)Specific GravityViscosityWater quality limit15m3/h3-11≤21000≤12000≤6001.5≤30Service environmentDrilling and operation sites in oil-gas field (water-based mud)Installation conditionsLeveling hardened ground, covering 150m2Treatment scopeTreatment in oil-gas field while drilling, and waste mud and fluid treatment after drillingMain Environmental Indexes of Dewatered Mud Cake (mg/L)Dewatering Rate of Mud SewageWater Content of Mud CakePHOil ContentCOD≥60%75%3＜PH＜11≤30≤300Standard basisIntegrated Wastewater Discharge Standard (GB8978-1996, Grade III)Identification Standards for Hazardous Wastes - Identification for Corrosivity (GB5085.1-2007)Identification Standards for Hazardous Wastes - Identification for extraction toxicity (GB5085.3-2007)Examples of Site Application(The number of picture of mud treatment equipment on site shall be greater than or equal to 4)On-site Automatic Solidifying and Dosing Machine Equipment for Receiving Drilling WastesOn-site Solid-Liquid Separation for Sewage Treatment Solid-Liquid Separation Equipment on Equipment Site