摘要:
An anaerobic wastewater treatment system includes a recycle tank, a bioreactor tank and a bioselector for recapturing anaerobic microbial consortia particles escaping from the bioreactor tank and returning them to the bioreactor tank. The bioreactor tank receives recycled wastewater feed from a recycle tank and discharges via an overflow outlet treated wastewater and microbial consortia particles to a bioselector. The bioselector is adapted to separate entrained microbial consortia particles and return a feed to the bioreactor tank which including some of the treated wastewater received from the bioreactor tank and the microbial consortia particles received from the bioreactor tank. The bioselector provides a recycle feed to the recycle tank. Overflow from the bioselector provides an effluent of treated wastewater leaving the system.
摘要:
An improved elongated fuel inlet pipe having an opening on one end for inserting a fuel source and a plunger valve at an opposite end for permitting fluid to flow into a tank. The pipe has a plurality of slots in a top sidewall of the pipe, a movable closure over the slots and a spring to bias the collar to a closed position. A gate is mounted inside the pipe and is drivingly linked to the closure by a finger that extends through one of the slots for displacing the closure longitudinally toward the plunger valve when there is an increased pressure applied to the gate for permitting fluid flow through the slot.
摘要:
An apparatus, program product and method for estimating the number of keys within an index key range over an index using page pointers to pages in the index comprises a program configured for scanning the index, from a divergence point of the key range, until a page pointer is found and incrementing a counter for each found page pointer. The program is further configured for determining if the page pointer points to a leaf page in the index, and if it does, continuing the scan to find the next page pointer without going to the corresponding leaf page. Otherwise, the program continues the scan to find the next page pointer and continues the scan for page pointers and increments the counter until the index is scanned for the entire key range. Upon completion of the scan, the program determines an estimate of the number of keys utilizing the counter.